Deventer is a city and municipality in the Salland historical region of the province of Overijssel, Netherlands. In 2020 the municipality of Deventer had a population of 100,913. The city is largely situated on the east bank of the river IJssel, but it also has a small part of its territory on the west bank. In 2005 the municipality of Bathmen was merged with Deventer as part of a national effort to reduce bureaucracy in the country .

Salland is a historical dominion in the west and north of the present Dutch province of Overijssel. Nowadays Salland is usually used to indicate a region corresponding to the part of the former dominion more or less to the west of Twente.